How does the author develop the central idea in the passage? M. The author describes the strategies children and young athletes should use to remain healthy and avoid injury. P. The author presents data about children’s play and sports injuries along with strategies for addressing risk and reducing the rate of injury. R. The author argues that parents can help reduce the risk of children’s sports injuries by being involved in the process. S. The author compares injury rates of different types of play and sports and advises against activities such as skateboarding and basketball.